A large, red, rectangle-thingy bearing a white insignia intended for those with literary talent. As of yet it has been found to have no significant value other than serving as an excellent target for practicin' and obstructin' my view of them other trucks crossin my line of travel.

Red Nekk: "Officer, no 'fence but if the stinkin government wasnt usin' all ma tax money on putting up them useless rectangle stop sign thingys, maybe dead guy over there woulda seen me drivin this way and woulda stopped. Coulda saved this here wreck from hapenin'."

Someone that appears attractive from a distance whom upon further inspection turns out to be totally hot often causing others to stop and marvel at their beauty and/or hotness.

The term is derived from the motions of which you would take when approaching a stop sign in a car. You slow down to check said person out and when you come to the conclusion that they are indeed worth the effort you come to a complete stop and approach.